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Originally Posted by parmis I'm going to take a guess here. Is this your problem?
But that can't be right...the a on the RHS needs a subscript, doesn't it?
Oh... sorry i made a mistake. a n is Arithmetic progression! d=1/5
So is an arithmetic progression of the form but what does "m" represent in your formula?
I dont know. My teacher gave me this, but i cant answer it!
Then you should probably ask your teacher what means.
Originally Posted by parmis Oh... sorry i made a mistake. a n is Arithmetic progression! d=1/5 Assuming your arithmetic progression is since you arbitrarily wrote a d for some reason, we can set these two expressions equal to each other:
If you are trying to solve for , it is the solution to this quadratic equation in :
You can use the quadratic formula. You get a mess, but I suppose that could be the solution for ...
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